“I never did anything worth doing by accident, nor did any of my inventions come by accident; they came by work.”

The value of an idea lies in the using of it.

I find out what the world needs. Then I go ahead and try to invent it.

There seems to be no limit to which some men will go to avoid the labor of thinking. Thinking is hard work.

Anything that won’t sell, I don’t want to invent. Its sale is proof of utility, and utility is success.

Time is really the only capital that any human being has, and the only thing he can’t afford to lose.

Great ideas originate in the muscles.

There is no expedient to which a man will not go to avoid the real labor of thinking.

Continued innovation is the best way to beat the competition.

Everything comes to him who hustles while he waits.

I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.

I start where the last man left off.

I am 67, but I’m not too old to make a fresh start.

Each time you fail, you have eliminated another wrong option.

I’ve realized that most of my best ideas have followed a good night’s sleep.

I have far more respect for the person with a single idea who gets there than for the person with a thousand ideas who does nothing.

Work while others are wishing.

No birth is an accident, No experience is without meaning, and no life is without value.

It’s no accident many accuse me of conducting public affairs with my heart instead of my head. Well, what if I do?.. Those who don’t know how to weep with their whole heart don’t know how to laugh either.

The universe is too grand and harmonious to believe it’s all an accident.

The mere possession of a gun is, in itself, an urge to kill, not only by design, but by accident, by madness, by fright, by bravado.

It was not by accident that the greatest thinkers of all ages were deeply religious souls.

Light finds you just as I once did: an accident that is no accident.

(The discovery of penicillin) was a triumph of accident, a fortunate occurrence which happened while I was working on a purely academic bacteriological problem.

Men who stand in the highest ranks of society seldom hear of their faults; if by any accident an opprobrious clamour reaches their ears, flattery is always at hand to pour in her opiates, to quiet conviction and obtund remorse.